Ericameria nauseosa var. leiosperma

(A. Gray) G. L. Nesom & G. I. Baird

Phytologia 75: 86. 1993.

Common names: Smooth-fruit rabbitbrush
Endemic
Basionym: Bigelowia leiosperma A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 139. 1884 (as Bigelovia)
Synonyms: Chrysothamnus nauseosus subsp. leiospermus (A. Gray) H. M. Hall & Clements
Treatment appears in FNA Volume 20. Treatment on page 66. Mentioned on page 63, 68.
Revision as of 20:01, 29 July 2020 by imported>Volume Importer
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Plants 25–60 cm. Stems yellowish green, often leafless at flowering, densely, compactly tomentose. Leaves yellowish green; blades 1-nerved, filiform, 10–30 × 0.8–1 mm, faces glabrate. Involucres 8–11.5 mm. Phyllaries 17–31, apices erect, acute to obtuse, abaxial faces glabrous. Corollas 5–8.5 mm, tubes mostly glabrous, lobes 0.5–1.1 mm (erect to incurved), glabrous; style appendages longer than stigmatic portions. Cypselae glabrous; pappi 3–6.6 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Gravelly and sandy soils, rocky crevices
Elevation: 700–2800 m

Distribution

V20-110-distribution-map.gif

Ariz., Calif., Colo., Nev., Utah.

Discussion

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

not tailed +, rounded +  and obtuse +
distinct +
acute;obtuse +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
rounded +  and flat-topped +
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(A. Gray) G. L. Nesom & G. I. Baird +
decurrent +
Bigelowia leiosperma +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
filiform +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
rugulose +  and muricate +
tan +  and reddish +
subequal +
Smooth-fruit rabbitbrush +
not 2-lipped +  and actinomorphic +
0.5 cm5 mm <br />0.005 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
turbinate +  and cylindric or oblanceoloid +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Calif. +, Colo. +, Nev. +  and Utah. +
700–2800 m +
resinous +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Gravelly and sandy soils, rocky crevices +
thyrsiform +, paniculiform +, branched +, racemiform +, cymiform +, discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
obconic;subcylindric +
0.8 cm8 mm <br />0.008 m <br /> (1.15 cm11.5 mm <br />0.0115 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
sessile +  and petiolate +
yellowish green +
usually ascending +  and spreading +
erect;spreading or reflexed +
deltate +  and triangular +
raised +  and evident +
2-carpellate +
persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.66 cm6.6 mm <br />0.0066 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering late summer–fall. +
0.15 cm1.5 mm <br />0.0015 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
ovate +  and lanceolate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
resinous +
yellowish green +
ascending +  and spreading +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Chrysothamnus nauseosus subsp. leiospermus +
Ericameria nauseosa var. leiosperma +
Ericameria nauseosa +
variety +
campanulate +
perennial +, biennial +  and annual +